Nightingale
(Published on 23. May 2026, 05:30 by NicoD)
Rules
Normal sudoku rules apply.
There are nine doubler cells in the grid, one in every row, column and box. Each digit from 1-9 appears in a doubler cell exactly once. A doubler cell's value counts as double its digit.
Along green lines, adjacent values differ by at least 5.
Along pink lines, values form a consecutive sequence in any order.
Arrows indicate the direction in which the first three values in that row or column (nearest the arrow) increase or decrease. For instance, the value in r4c1 is strictly greater than the value in r4c2, and the value in r4c2 is strictly greater than the value in r4c3. If no arrow appears adjacent to a row or column, the three nearest values must not strictly increase or decrease.
Solution code: Column 3
Comments
on 25. May 2026, 04:28 by Dantheman8urham
fun puzzle me and my dad did it together it helped me to visualize the arrows as thermos
on 24. May 2026, 17:17 by 6rank
Great puzzle. Thanks for setting this up :)
on 24. May 2026, 11:34 by damo_89
I agree that break in was really clever
on 24. May 2026, 05:38 by bansalsaab
That break in was amazing.
on 24. May 2026, 01:04 by Jafacake
What a break in. Thought it was going to be an intricate hunt for through variations but the rulesets perfectly suited each other
on 23. May 2026, 15:42 by mihel111
Wonderfull puzzle. Very hard if you forget the negative constraint. Easier, but still hard when you remember it.
on 23. May 2026, 09:06 by Snookerfan
Beautiful new ruleset and execution leading to a very pleasant and smooth solve. Thanks!
